Pure Keto Burn Review Conclusion Pure Keto Burn is designed for buyers who will reduce their carb intake. Ideally, the site suggests consuming a diet broken down into 70% fat, 25% protein, and 5% starch, which is true. Natural with any low-carb diet. The treatment may help the client get fitter and keep them in shape faster, but there aren’t any exact details on the site about the fixatives meant to help with the change.